CN220491127U

CN220491127U - Remote vision display device with touch pad on window

Info

Publication number: CN220491127U
Application number: CN202321542899.0U
Authority: CN
Inventors: 王阳; 段家喜; 姚成; 王其为
Original assignee: Beijing Ned+ Ar Display Technology Co ltd
Current assignee: Beijing Ned+ Ar Display Technology Co ltd
Priority date: 2023-06-16
Filing date: 2023-06-16
Publication date: 2024-02-13
Anticipated expiration: 2033-06-16

Abstract

The patent relates to a remote vision display device, including holding the casing that shows image source and optical system, optical system has the effect of enlargies to the image that shows the image source and provide, includes the window in the optical system, has the touch pad on the window, and the touch pad is transparent state in order to transmit the image light that comes from showing the image source, and the touch pad exposes in the casing towards the user. According to the utility model, under the condition that the touch panel and the display image source are arranged separately, the operation experience similar to that of a touch tablet computer can be realized by a user through controlling the image by touching on the window, and the user can touch the touch tablet computer.

Description

Remote vision display device with touch pad on window

Technical Field

The present utility model relates to a remote vision display device, and more particularly, to a remote vision display device having a touch panel on a window so as to be interoperable as if a touch display screen is operated.

Background

A Head-up display (HUD) is a technology developed from a reflector sight, belongs to a visual optical technology, and is gradually applied to a fighter plane, and is used in an automobile cockpit in recent years as a driver of a user can see driving assistance information such as navigation when focusing on a visual front driving operation through such display, because the important information required for controlling the flight such as speed of speed can be seen immediately without lowering the Head and turning the Head of the pilot (i.e., the user).

The implementation of the head-up display technology requires a relatively small display image source and an optical system with a projection amplifying function, and thus has the advantage of throwing away an image itself, i.e., when a user views an image provided by the head-up display system, the image is projected by the optical system to be emitted from a far place, and eyes of the user are in a relatively relaxed state when viewing, so that myopia caused by long-term near viewing is not induced.

An exemplary C-HUD system for an automobile cockpit is generally shown in FIG. 1 (a), wherein an optical system with a projection amplifying function is generally built in a center console and is not exposed, and can partially reflect by using a curved surface of an automobile front windshield, and a driver can see a prompt image such as steering navigation through a transparent window with a predetermined size; an exemplary optical system for implementing a C-HUD may be one in which the C-HUD display system used in the cockpit emits substantially parallel light to the human eye with a large visual exit pupil distance, as shown in fig. 1 (b). Since the driving space is approximately equivalent to the desk space, a similar HUD system has also been proposed which can be placed in an integral housing for use in desk space or in the rear air compartment of an automobile cabin, as mentioned in CN 218158572U. Because the HUD of the type has a physical window and is approximately in the range of the user to operate in an extendable mode, the user can watch the image and hope to touch the image in habit, and the operation experience similar to that of a touch mobile phone and a touch tablet computer is realized.

Disclosure of Invention

The present utility model has been made in view of the above-mentioned needs of the prior art, and provides a remote vision display device having a touch pad on a window so as to be interoperable as if the touch display screen were operated.

In order to solve the technical problems, the technical scheme provided by the utility model comprises the following steps:

a remote vision display device comprises a display image source, an optical system with magnifying function for the image provided by the display image source, and a shell for containing the display image source and the optical system partially or totally;

the optical system at least comprises a window and a curved mirror, wherein the window is attached with a touch panel which is in a transparent state so as to transmit image light from a display image source, and the touch panel faces a user and is exposed out of the shell and can be touched by the user;

the exit pupil distance of the optical system is 150-600mm, and the virtual image distance is 3-8 m.

Preferably, the display image source is a flat panel light emitting display type selected from an LCD type, an OLED type or an LCoS type, and the size of the touch panel is greater than or equal to the size of the display image source.

Preferably, the length-width dimension ratio of the display image source is consistent with that of the touch panel.

Preferably, the window is a portion of the exterior surface of the remote display device, and the touch pad is sized commensurate with the window and can be placed on the glass or resin material forming the window.

Preferably, the window is formed in a flat plane and used for a synthesizer function with inverse transmittance, 10-18 inches, and an optical film layer with preset inverse transmittance is covered on the inner surface of the window, and the film layer can have polarization splitting characteristics and respectively transmit and reflect light rays with different polarization states.

Preferably, a touch control circuit electrically connected to the touch pad is further included, the touch control circuit being connected to the central processor via the display controller or directly, wherein the touch control circuit and the display controller are disposed within the housing.

Preferably, the touch panel is selected from any one of resistive, capacitive, ultrasonic, and infrared, and is turned off in response to a control signal output from the display controller, so that the display device is only in a display mode.

Preferably, physical markings are provided at the peripheral location of the window of the remote display device so that the touch pad may be calibrated according to a calibration standard image or a physically fixed location of the window.

Preferably, the indicia is proximate to the display image source location and line of sight center, and calibration is initiated in response to a user touching a physical key above or disposed at the location accurately.

Preferably, the display image source provides an image by scanning in MEMS or DLP mode, and the optical system further includes at least one lens element to direct the image light provided in scanning mode as described above to the window, the elements of the optical system satisfying the absence between the window and the user's human eye.

According to the utility model, the touch pad is arranged on the window, the transparency and the operation space of the window are fully utilized, so that a user can inherit various intelligent equipment operation habits equipped with flat panel display, the touch can be realized, and the effect of convenient operation is achieved.

Drawings

FIG. 1 (a) is a schematic C-HUD system diagram for an automobile cockpit;

FIG. 1 (b) is a schematic diagram of an optical system for implementing a C-HUD;

FIG. 2 is a schematic view of an optical system of a remote display device of the present utility model;

FIG. 3 is a diagram of a remote display device of the present utility model;

FIG. 4 is a schematic view of the field angle of the remote display device of the present utility model;

FIG. 5 (a) is a schematic diagram of an exemplary capacitive touch pad;

FIG. 5 (b) is a schematic diagram of a capacitive touch pad conductive row of another shape;

FIG. 6 is a schematic diagram of the connection of the circuit components of the touch pad in a remote display device according to the present utility model;

reference numerals: 1-window, 10-optical system, 2-display image source, 3-curved mirror, 4-virtual image, 20-shell, 20 a-calibration mark, TP-touch pad and TPC-touch control circuit.

Detailed Description

Specific structures and implementation processes of the present solution are described in detail below through specific embodiments and drawings, and components with the same functions are denoted by the same reference numerals.

As mentioned in the background section of this patent, fig. 1 (b) shows a conventional C-HUD display, which includes at least a window 1, a display image source 2 and a curved mirror 3, and may further include a lens group having a predetermined curvature between the optical paths of the display image source 2 and the curved mirror 3, so as to enhance the magnifying effect of the optical system 10 on the image provided by the display image source and improve the image quality, and may be determined according to the final technical requirements, but the technical scheme of the present utility model is not limited thereto, and is described in a schematic manner by a system which is conveniently placed in a housing for convenience of description, as shown in fig. 2.

The remote vision display device according to the present utility model includes an optical system 10 as shown in fig. 2 built in a housing 20, the optical system 10 including a window 1 for magnifying and projecting an image provided by a display image source 2 to eyes of a user at least through a curved mirror 3, the window 1 being covered with a light-transmitting material, typically optical glass or a resin material, facing the user so that the user sees image light emitted from the display image source 2 through the window; such an optical system may be conveniently housed in a unitary housing, as shown in fig. 3, where window 1 is part of the outer surface of housing 20,

slightly different from the optical system of the C-HUD display mentioned in the background art, in the far vision display device provided by the present utility model, the size of the display image source is smaller, preferably smaller than 20 inches, for example, a display image source of 4-15.6 inches may be selected, the optical system is set such that non-parallel light is incident on the human eye, at this time, the user can see the light which is obviously enlarged compared with the size of the image displayed by the display image source 2 and is emitted from a far position through the window, so as to form a virtual image 4, and the virtual image forms a predetermined field angle FOV for the human eye, and is generally calculated in terms of a diagonal field angle, as shown in fig. 4, the virtual image distance of the far vision display device is about 3-8m, the exit pupil distance is between 150-600mm, and the diagonal field angle FOV is between 10 degrees and 40 degrees.

Preferably, the window 1 is formed into a flat plane with a light-transmitting glass material with higher intensity, about 10-18 inches, and since the window 1 itself belongs to a part of the optical system 10 and is responsible for a synthesizer (combiner) with inverse transmittance, the inner surface of the window glass is generally covered with an optical film layer (not shown) with inverse transmittance, and the film layer can have polarization splitting characteristics, and respectively transmit and reflect light rays with different polarization states, so as to improve the imaging quality of the optical system, improve the light energy utilization efficiency and eliminate the parasitic light effect.

The preferred placement of touch pad TP on the outer surface of window glass is not limited to the type of touch pad, and touch pads of the resistive, capacitive, ultrasonic, infrared, etc. type may be used in the present utility model, and the present utility model will be described below schematically with respect to a conventional capacitive touch pad, as shown in fig. 5 (a), an exemplary capacitive touch pad being an array of rows and columns that are electrically conductive and transparent, preferably made of Indium Tin Oxide (ITO) for optical transparency, and may be composed of any electrically conductive transparent material, such as other transparent conductive oxides and transparent conductive polymers. A deformable dielectric is disposed over the column conductors. Such a structure produces parallel plate capacitance and fringe capacitance that can be interrupted by the user's finger, which measures both true capacitive touch from the fringe field and force from the parallel plate capacitance as the material between the rows and columns is deformed; the diamond pattern as shown in fig. 5 (b) can also be constructed with this property using fringe fields between diamond and parallel capacitances, where the rows and columns are staggered or interdigitated with one another.

According to the remote vision display device of the present utility model, the touch panel TP (i.e., window position) has an angle α (α+.0°) with the display image source and an angle β with the line of sight (i.e., view angle center line, generally set to be perpendicular to the plane of the virtual image 100), and the presence of the angles α and β affects the accurate relationship between the touch point coordinate recognition and the display image compared with the touch point recognition mode of the touch panel that is fully attached to the surface of the display image source, and therefore, the mapping of the touch panel and the view angle FOV for determining the image correspondence information of the user operation touch position reaction is established at least according to the angle β, wherein the mapping of the touch panel and the view angle FOV should include predetermined optical system view angle information, and the optical distortion processing information of the image in the field of view.

In operation, the finger of the user touches the touch pad TP, and according to the mapping relationship, the touch control circuit TPC determines the position of the touched target image, and transmits an electrical signal reflecting the position coordinates of the touched target image to the display controller that is electrically connected, and optionally, through a physical interface of the display controller, to the central processor, so that the central processor responds to the application or function corresponding to the touched target, and sends a signal for converting the display image to the display controller, as shown in fig. 6. It will be appreciated by those skilled in the art that the touch control circuit TPC may also transmit touch position coordinate signals to the central processor without passing through the display controller, and that the touch control circuit and the display controller may also be disposed within a housing that may be used as a display computer if the central processor is further located within the housing. The touch panel may be turned off in response to a control signal output from the display controller, so that the display device is only in a display mode and is prevented from being touched by mistake or being operated in an improper time.

Because the touch pad TP and the display image source are photoelectric conversion elements, the touch pad TP and the display image source can be connected through electrical signal data, and according to the angle alpha and the size proportion which are not zero, the mapping of the touch pad and the display image source can be established to trigger the display image to be displayed in a conversion mode according to the touch operation purpose, wherein the mapping of the touch pad and the display image source can not comprise image distortion processing information; preferably, a touch panel having the same length-width dimension ratio as the display image source is used, and the influence of the angle α and the influence of the ratio can be ignored, and the relationship is roughly considered to be corresponding, that is, the dimension of the touch panel is larger than the dimension of the display image source, but the relationship is considered to be equal-ratio magnification, the relative positions of the touch coordinates fed back by the touch panel are consistent, and the touch operation purpose can be recognized according to the control mode when the touch panel and the display image source are completely attached, so as to control the display image source to switch the display.

Although the display image source 2 of the present utility model is illustratively of a flat panel, surface-emitting display type, such as an LCD type, an OLED type or an LCoS type, it will be appreciated by those skilled in the art that the display image source need not be of a flat panel, but may also support the touch control mode of the present utility model by scanning an image by MEMS or DLP mode. Except that more optical elements, such as lens groups, must be included in the optical system 10 at this time, so that the entire optical system 10 is required to have no optical elements between the window and the user's eye to avoid that the person cannot see the image to be operated when he or she operates the touch screen.

The touch panel is mainly set with absolute coordinates, and each positioning coordinate has no relation with the last positioning coordinate, so that the touch panel is physically an independent coordinate positioning system, and when the touch panel is completely attached to a display image source, the data of each touch is converted into the displayed coordinates through the preset calibration; in the remote vision display of the present utility model, the touch panel is not attached to the display image source, there is influence of non-absolute determined position factors such as angle β and user viewpoint position, unlike the touch feedback situation when the touch panel is completely attached to the display image source, so as to obtain better visual and tactile recognition experience, preferably, a calibration mode with actual physical reference is provided in the touch control circuit to allow the calibration of the touch reference according to different user use situations, at this time, physical marks 20a are provided at the peripheral position of the window of the remote vision display device of the present utility model to help the realization of the calibration, the marks are preferably close to the display image source position and the sight line center, and the calibration is started in response to the user touching the position accurately or setting physical keys at the position.

By now it should be appreciated by those skilled in the art that while exemplary embodiments of the utility model have been shown and described in detail herein, many other variations or modifications that are consistent with the principles of the utility model may be directly ascertained or derived from the teachings of the present disclosure without departing from the spirit and scope of the utility model. Accordingly, the scope of the present utility model should be understood and deemed to cover all such other variations or modifications.

Claims

1. A remote vision display device with a touch panel on a window comprises a display image source, an optical system with a magnifying function on an image provided by the display image source, and a shell for partially or completely accommodating the display image source and the optical system; it is characterized in that the method comprises the steps of,

2. The remote viewing display device having a touch pad over a window of claim 1, wherein the display image source is a flat panel emissive display type selected from the group consisting of LCD type, OLED type, and LCoS type, and wherein the size of the touch pad is greater than or equal to the size of the display image source.

3. The remote viewing display device having a touch pad over a window of claim 2, wherein the display image source has a length to width dimension ratio that is consistent with the touch pad.

4. A remote display device having a touch pad over a window as claimed in claim 1 or 2, wherein the window is part of an outer surface of the remote display device, the touch pad being commensurate in size with the window and being positionable over glass or resinous material forming the window.

5. A remote viewing display device having a touch pad over a viewing window as recited in claim 3, wherein said viewing window is formed as a flat planar surface and is adapted to function as a combiner of inverse transmission ratios, 10-18 inches, and wherein the interior surface of the viewing window is coated with an optical film of predetermined inverse transmission ratios, which film has polarization splitting characteristics, and which film transmits and reflects light of different polarization states, respectively.

6. The remote vision display device having a touch pad on a window of claim 1, further comprising a touch control circuit electrically connected to the touch pad, the touch control circuit connected to the central processor via a display controller or directly, wherein the touch control circuit and the display controller are disposed within the housing.

7. The remote vision display device with a touch pad on a window of claim 6, wherein the touch pad is selected from any one of resistive, capacitive, ultrasonic, and infrared, and is turned off in response to a control signal output from a display controller, thereby making the display device be in a display mode only.

8. The remote vision display device having a touch pad on a window of claim 7, wherein physical indicia are provided at a peripheral location of the window of the remote vision display device such that the touch pad can be calibrated according to a calibration standard image or a physically fixed location of the window.

9. The remote vision display device having a touch pad on a window of claim 8, wherein the indicia is proximate to a display image source location and a center of line of sight, and wherein calibration is initiated in response to a user touching a physical key above or disposed at the location.

10. The remote display device having a touch pad over a window of claim 1, wherein the display image source provides an image by scanning in a MEMS or DLP mode, and wherein the optical system further comprises at least one lens element to direct the image light provided in the scanning mode to the window, the elements of the optical system satisfying the absence between the window and the user's eye.